Primary 5 Mathematics Percentage Quiz

P5 Maths Quiz: Percentage

Questions: 20 Time: 35 minutes Total Marks: 50

Section A: Multiple Choice (10 marks)

Choose the best answer. [2 marks each]

1. What is 25% of 240?

   • A) 25
   • B) 60
   • C) 96
   • D) 120

2. Express 3/5 as a percentage.

   • A) 35%
   • B) 53%
   • C) 60%
   • D) 65%

3. A shirt costs $80. After a 15% discount, what is the new price?

   • A) $68
   • B) $65
   • C) $72
   • D) $75

4. In a class of 40 students, 30% are boys. How many girls are there?

   • A) 12
   • B) 28
   • C) 30
   • D) 32

5. If 20% of a number is 45, what is the number?

   • A) 9
   • B) 180
   • C) 225
   • D) 250

Section B: Short Answer (20 marks)

Show your working clearly. [4 marks each]

6. Calculate: a) 15% of $360 b) 8% of 2,500 kg

7. Express these as percentages: a) 0.35 b) 7/20

8. Find 120% of 450.

9. A book originally costs $25. The price increased by 12%. What is the new price?

10. In a survey, 180 people out of 300 preferred chocolate ice cream. What percentage preferred chocolate?

Section C: Word Problems (20 marks)

Use model drawing or show your working clearly. [5 marks each]

11. GST Problem A laptop costs $1,200 before GST. In Singapore, GST is 9%. What is the total price including GST?

12. Savings Problem Sarah saves 20% of her monthly allowance of $150. After 6 months, how much has she saved? If she spends 30% of her savings on a gift, how much money does she have left?

13. Sale Problem During a sale, all items are reduced by 25%. If a dress now costs $60, what was its original price?

14. Mixed Problem A school has 800 students. 45% are girls and the rest are boys. Of the boys, 20% play football. Of the girls, 30% play basketball. How many students play either football or basketball?

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End of Quiz

Remember to convert fractions to percentages and vice versa where needed.

P5 Maths Quiz: Percentage - ANSWERS

Questions: 20 Time: 35 minutes Total Marks: 50

Section A: Multiple Choice (10 marks)

2 marks each

1. B) 60

   • 25% of 240 = 25/100 × 240 = 60

2. C) 60%

   • 3/5 = 60/100 = 60%

3. A) $68

   • 15% of $80 =$12
   • New price = $80 -$12 = $68

4. B) 28

   • Boys = 30% of 40 = 12
   • Girls = 40 - 12 = 28

5. C) 225

   • 20% of number = 45
   • 1% = 45 ÷ 20 = 2.25
   • 100% = 2.25 × 100 = 225

Section B: Short Answer (20 marks)

4 marks each

6. Calculate: a) 15% of $360 = 15/100 ×$360 = $54 b) 8% of 2,500 kg = 8/100 × 2,500 = 200 kg

7. Express as percentages: a) 0.35 = 35/100 = 35% b) 7/20 = 35/100 = 35%

8. 120% of 450: 120/100 × 450 = 540

9. Price increase: Original: $25 Increase: 12$25 = $3 New price:$25 + $3 = **$28**

10. Survey percentage: Fraction: 180/300 = 3/5 Percentage: 3/5 × 100% = 60%

Section C: Word Problems (20 marks)

5 marks each

11. GST Problem Laptop cost: $1,200 GST: 9$1,200 = 0.09 × $1,200 =$108 Total price: $1,200 +$108 = $1,308

12. Savings Problem Monthly savings: 20% of $150 =$30 6 months savings: $30 × 6 =$180

    Spends: 30% of $180 =$54 Money left: $180 -$54 = $126

13. Sale Problem Sale dress = $60 (after 25This means$60 = 75% of original price 1% of original = $60 ÷ 75 =$0.80 Original price = $0.80 × 100 = **$80**

14. Mixed Problem Total students: 800 Girls: 45% of 800 = 360 Boys: 800 - 360 = 440

    Boys playing football: 20% of 440 = 88 Girls playing basketball: 30% of 360 = 108

    Total playing sports: 88 + 108 = 196 students

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Marking Scheme:

• Section A: 1 mark for correct answer, 1 mark for method
• Section B: 2 marks for method, 2 marks for correct answer
• Section C: 2 marks for understanding, 2 marks for working, 1 mark for final answer

Total: 50 marks